Total KLUDGE to get system to link by removing dependency on TLS
for context variable.  Please fix along with all the other problems

btw to configure

you will need bgclang and bgclang++11 in your path eg.

export PATH=/home/projects/llvm/bin:$PATH

and then
do a autoconf in your source if you need it

and then configure as follows in your build directory

CC=bgclang CXX=bgclang++11 ../EbbRT/configure -host powerpc64